Questions about the code level of AppDefinition

[wyhdil]

Hello:
I have some questions and I wonder if you can help me solve them.

AppDefinition should be used to define the IDE image and required resources, right?

But I can't find where the assignment is made.

It looks like there are corresponding fields here.But I'm not sure if it's right.

I would like to ask where I can see an explanation of the code directory structure or a more detailed explanation of the code level.

Thanks！

[sgraband]

Hey @wyhdil,

which assignment are you talking about?
The data in the second screenshot are Kubnernetes Resources, that are being applied to the cluster. Most likely via the service.
The classes in the first screenshot are the POJOs for those resources in Java. We use those to handle the created resources with the operator. The operator watches the Cluster for those resources and transforms them to the POJO using fabric.io's kubernetes client.

I hope this answers your question.
Please note, that this is a free support forum and we cannot provide full tutorials/workshops in this forum. If you want more detailed coaching about Theia Cloud you could consider booking one of our developer support packages.

[wyhdil]

Hello, thank you very much for your previous answer! ! ! Now I still have some questions

I mean I don't know how the IDE's pods are created. Theoretically, this pod should be created through the deployment.yaml file, but I don't know how to create this file.

For example, how is limitsCpu resource assigned?If I want to change the value of the limitsCpu resource and use it as a variable for user customization, what should I do?

[sgraband]

The "deployments" in your screenshots are not deployments, but Custom Resources (CRs). You can manually apply a CR using kubectl apply -f <fileName>. In a standard Theia Cloud deployment this would be done via the service that offers endpoints for requesting a new session (deployment).

Once the resource is applied to the cluster (it doesn't matter if that happens manually or via the service) the operator handles that resource and creates the deployment with the information of the CR. This is done, by replacing the placeholders in this file and then applying that file.

The replacements are happening here.

Hope this helps.

[wyhdil]

Okay, thank you very much for your patient answer！ I will take a closer look at the implementation process here.

[wyhdil]

@sgraband There is something I need to confirm, do you mean to replace that file with the contents of this file?

If this is the case, what is the process of implementing this process at the code level?（The main reason is that I don’t know how this file is imported and used.）

I would be very grateful if you could answer!

[sgraband]

Yes. The operator watches all Custom Resources that are related to Theia Cloud on the cluster. Once he finds such a resource it is transformed into a POJO and in the replacement class it is the AppDefinition object.

[wyhdil]

OK, thanks!